Inferring periodic orbits from spectra of simple shaped micro-lasers

Abstract

Dielectric micro-cavities are widely used as laser resonators and characterizations of their spectra are of interest for various applications. We experimentally investigate micro-lasers of simple shapes (Fabry-Perot, square, pentagon, and disk). Their lasing spectra consist mainly of almost equidistant peaks and the distance between peaks reveals the length of a quantized periodic orbit. To measure this length with a good precision, it is necessary to take into account different sources of refractive index dispersion. Our experimental and numerical results agree with the superscar model describing the formation of long-lived states in polygonal cavities. The limitations of the two-dimensional approximation are briefly discussed in connection with micro-disks.

13 pages, 19 figures, accepted for publication in Physical Review A

References in corpus (5)

• Self-consistent multi-mode lasing theory for complex or random lasing media
• Correcting ray optics at curved dielectric microresonator interfaces: Phase-space unification of Fresnel filtering and the Goos-Haenchen shift
• First Experimental Observation of Superscars in a Pseudointegrable Barrier Billiard
• Directional emission of stadium-shaped micro-lasers
• Ray-wave correspondence in the nonlinear description of stadium-cavity lasers

Cited by in corpus (2)

• Experimental Test of a Two-dimensional Approximation for Dielectric Microcavities
• Finite size corrections to the blackbody radiation laws